"My biggest fear is that people will stop being curious. That they'll stop asking questions, and just accept what they're told."

"The great thing about science is that it doesn't ask for your faith, it just asks for your eyes."

"We are all connected. To each other, biologically. To the Earth, chemically. To the rest of the universe, atomically."

"I'm not afraid of questions. I'm afraid of people who don't ask questions."

"The problem with 'alternative medicine' is that once it's proven to work, it's just called medicine."